Sally is leaning against the door in an office elevator Chen: I wouldn't lean against that elevator door if I were you. Sally: [Stands upright and turns] Why? It seems sturdy enough. Chen: Just the other month, there was a report of a little girl who died by doing that. Sally: Are you serious? How could that happen? Chen: The elevator door wasn't attached at the bottom and opened as soon as she pressed against it. Sally: Scary! What a horrible way to die! Why didn't I hear about that in the news? Chen: Maybe it didn't make it into the English news, but the Chinese press covered it in a major way. Sally: I bet that caused an explosion of lawsuits.
Each satellite has its own orbit which is selected according to its purpose. Communications satellites, for example, have a geostationary orbit. That is an orbit which turns at the same speed as the rotation of the Earth. Satellites used for weather forecasting pass over the two poles of the Earth. By so doing, a different part of the Earth's surface is viewed on each successive orbit.
